Wednesday, October 7, 2026 · 11:00 AM – 12:00 PM
Raya Stern Trustees Room (2nd floor) — 123 Main St., Watertown, MA
Big blue blocks are an innovative, loose parts building system that transforms any space into a fun experiment! For kids ages 2-11. No registration. The Watertown Free Public Library does not discriminate and does not share your information with anyone. We are committed to providing reasonable accommodation to enable you to participate in our events.